The Template:Convert/Dual/LoffAvaluesDxSoff shows the input range for abbr=values (with no unit name) and then invokes {Convert/{4}|...} to process conversion to the parameter {4} output unit, handling the range by {{Convert/Dual/Values}} with range word {2} passed as {5} (to become {k} in rounding), and passing {2}=Dual/Numout to show the converted values. Examples: